Time to break out your PADI eRDPml for today's question.

Head to Dive Planning - 

It will ask if this is a multiple Level dive which it isn't and then it will ask if this is the first dive in our sequence which it also is not.

It will ask if you have the pressure group after the surface interval, you dod not.

Then it will ask what it was before the surface interval, this is G.

Then key in the surface interval time to find your new pressure group designation.

Message me if you need any assistance with dive planning. 

To simplify the term Barotrauma it's any pressure -baro- related injury - trauma.

This can be caused during both descent or ascent. Diving whilst ill or injured can be the underlying cause of many barotraumas as well as unsafe or ineffective descent and ascent techniques.

Proper ascent and descent techniques are included in every PADI diver programs and should be considered standard practice as to avoid any incident in a healthy diver.

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This question is asking to define the term which can always be found in the Training Standards of the PADI Instructor Manual. The section as with others is alphabetised to make navigation as simple as possible.

A common question concerning deep dives is that if 18.1 metres constitutes a deep dive. The answer is yes. By definition, any dive deeper than 18 metres is a deep dive.

30 metres is the maximum for deep dives within the PADI system without any speciality training which then extends to a maximum depth of 40 metres.

Remember that maximums are limits, not goals, and you should plan conservatively considering your ability and training as well as your experience as a professional and the conditions that you're diving in.

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Gauge pressure is always a zero-sum equation from the surface. Meaning it does not consider any pressure exerted from the atmosphere above the water and just wants to know what pressure is exerted against any gauge while at depth.

The pressure exerted by fresh water is 0.097 ATM every metre. This means you just have to multiply the depth by the pressure- 45X0.097=3.88 to 2 decimal places.

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The conduct of the Controlled Emergency Swimming Ascent in open water can be found in the PADI Instructor Manual - Open Water Diver Course - Section 4 under the dive flexible skills and is supported in the PADI Guide To Teaching materials.

It can also be found on the back of the Dive Flexible teaching slate. Safe conduct of this skill is paramount and a control line must be used at all times.

I include a CESA specific workshop during my PADI IDC programs and all candidates must perform the skill in both confined and open water to ensure they are comfortable, competent and safe during their first teaching experience. 

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